213130030525 has 24 divisors (see below), whose sum is σ = 273616289024. Its totient is φ = 164514067200.

The previous prime is 213130030517. The next prime is 213130030549. The reversal of 213130030525 is 525030031312.

It is not a de Polignac number, because 213130030525 - 2³ = 213130030517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 213130030525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146847 + ... + 669196.

Almost surely, 2^213130030525 is an apocalyptic number.

213130030525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213130030525 is a deficient number, since it is larger than the sum of its proper divisors (60486258499).

213130030525 is a wasteful number, since it uses less digits than its factorization.

213130030525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816421 (or 816416 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 213130030525 its reverse (525030031312), we get a palindrome (738160061837).

The spelling of 213130030525 in words is "two hundred thirteen billion, one hundred thirty million, thirty thousand, five hundred twenty-five".